Finding the Fourth Proportional to 111,153.32, 153,334.18 and 75,331.08
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Solution
The fourth proportional to 111,153.32, 153,334.18 and 75,331.08 is: 103,917.99
Step by Step Solution
- Step 1: Write the proportion equation
111,153.32 : 153,334.18 = 75,331.08 : x - Step 2: Convert to fraction form
111,153.32/153,334.18 = 75,331.08/x - Step 3: Cross multiply
111,153.32x = 153,334.18 × 75,331.08 - Step 4: Simplify right side
111,153.32x = 11,550,829,380.31 - Step 5: Solve for x
x = 11,550,829,380.31/111,153.32 - Step 6: Final answer
x = 103,917.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.